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Journal of Shanghai University >

2019 , Vol. 25 >Issue 1: 45 - 55

DOI: https://doi.org/10.12066/j.issn.1007-2861.1893

Research Articles

Simulation of time-variant channel for train-ground LTE-M system in tunnel environment

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  • Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China

Received date: 2017-03-03

  Online published: 2019-02-26

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Abstract

To build a physical channel test platform to validate reliability of time division long term evolution (TD-LTE) technology for rail transit communication based train control (CBTC), it is necessary to set up a train-ground communication channel model. In this paper, a time-frequency analysis method is used to study the Doppler effect of a wireless time-varying channel in tunnel environments, especially when the train passes through the rail-side base station. Doppler spread based on a multiplicative spread factor is proposed. A channel model suited to physical realization with RF circuits is established. Effectiveness of the method is verified by ray tracing.

Key words： time division long term evolution (TD-LTE); tunnel environment; time-variant channel; Doppler spread

Cite this article

WU Huize, ZHENG Guoxin . Simulation of time-variant channel for train-ground LTE-M system in tunnel environment[J]. Journal of Shanghai University, 2019 , 25(1) : 45 -55 . DOI: 10.12066/j.issn.1007-2861.1893

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